Air purifier



FIG. 1 is a front, top and right side perspective view of an air purifier, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the air purifier that form no part of the claim. In FIG. 7 the broken line elements and unshaded areas adjacent to features drawn in solid line depict portions of the air purifier that form no part of the claim.

The oblique shading lines in the drawings are included to denote the reflective or highly polished quality of surface planes of the air purifier. 

CLAIM The ornamental design for an air purifier, as shown and described. 